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spinedocab · 05-11-2008, 04:02 PM

thank you for the advice. Here's the thing, though. Yesterday it was about 65 degrees F. I don't think I should hear the fan howling while cruising at a steady state, no load 35-40 miles per hour. If I stopped in traffic after a warm run and I hot-soak a few minutes, I would expect to hear the howl for a few seconds after I start rolling again, but then it should stop as all that nice ambient air comes flowing in the front again. If it howls indefinitely, and not even when it has had a chance to warm up in traffic, it is behaving unlike my other viscous fan clutches. Hence my question.

This fan will be hooked up on a cold start up too, for about 15 seconds. That seems odd to me too, unless it's just the thick viscous coupling spinning the fan until it warms up internally from the friction of the spinning.

05-11-2008, 04:02 PM	#3 (permalink)
spinedocab Registered User Join Date: Jan 2008 Location: Upper Bucks County, PA Posts: 2	thank you for the advice. Here's the thing, though. Yesterday it was about 65 degrees F. I don't think I should hear the fan howling while cruising at a steady state, no load 35-40 miles per hour. If I stopped in traffic after a warm run and I hot-soak a few minutes, I would expect to hear the howl for a few seconds after I start rolling again, but then it should stop as all that nice ambient air comes flowing in the front again. If it howls indefinitely, and not even when it has had a chance to warm up in traffic, it is behaving unlike my other viscous fan clutches. Hence my question. This fan will be hooked up on a cold start up too, for about 15 seconds. That seems odd to me too, unless it's just the thick viscous coupling spinning the fan until it warms up internally from the friction of the spinning. Last edited by spinedocab : 05-12-2008 at 03:41 AM.